Multisection veneer knife



Sept- 22, 1953 c. GOODMAN ET AL MULTISECTION VENEER KNIFE 2 Sheets-Sheet l Filed June l1, 1951 INVENTORS.

ATTORNEYS.

Sept. 22, 1953 c. GOODMAN ET AL MULTISECTION VENEER KNIFE .O 2 MMT. LN t 0MB e 0 V ,env MvN.. wf t C Nw m @A 2 1. 5 9 1 lJ l e n u J d e vl .1 F

ATTORNEYS Patented Sept. 22,V 1953 MULTISECTION VENER Clarence Goodman, High Point, and Claud T. Miller, Hickory, N. C.; said Miller assignor to said Goodman Application J une 11, 1951, Serial No. 231,032

This invention relates to an improved multisection veneer knife and more especially to that type of veneer knife which is adapted to be associated with a veneer shaving machine wherein the knife ispositioned in the machineand is moved automatically by said machine toward a revolving log to cut a thin strip from about the periphery of said log to form veneer sheets.

Heretofore in using knives of this type a solid knife, the length of the log, has been utilized and such a knife would rapidly wear and cause irregularities in the veneer sheet being stripped from the log which would require frequent replacement. It is therefore an object of this invention to provide a veneer knife having a beveled edge and the tip portion of the same being cut away and provided with an insert of hardened material such as tungsten carbide fused to the knife to provide an extremely hard Yedge which will not wear as rapidly as the knives heretofore in use.

,//In using a tungsten carbide tip to give increased wear to the veneer knife, it has been found that the heat necessary to braze the tip of the knife would cause warping of the knife and it is therefore another object of this invention to provide an improved knife with a base portion and a plurality of removable sections, each of said sections being relatively short and securable in alinement with each other to the base portion to form a composite knife having a smooth cutting edge extending the entire length thereof. Y

It is another object of this invention to provide a Yveneer knife adapted to be associated withv -aveneer machine for shaving sheets of veneer froma log comprising a base section of substantially the same length as the log to be shaved, a plurality of knife sections of relatively short length, means for securing said knife sections in alinement with each other to said base section, each of said knife sections being beveled to a point, the beveled edge thereof being cut away and provided with a tungsten carbide tip fused therein to present an extremely hard cutting surface, the cutting edge of each of said knife sections being straight and in alinement with the other knife sections to present a straight cutting edge to the composite veneer knife thus formed.

Some of the objects of the invention having been stated, other objects will appear as the description proceeds, when taken in connection .with the accompanying drawings in which- Figure 1 is a top plan view of the improved 1 Claim. (Cl. M4-241) 2 I multi-section veneer vknife showing portions of a clamping plateassociated therewith;

Figure 2 is a vertical sectional view through the improved veneer knife taken along the line 2-2 in Figure 1;

Figure 3 is an isometric view of one end of the improved veneer knife and associated clamping plates with parts in section;

Figure 4 is an isometric View of the base section of the improved veneerr knife with the knife sections removed therefrom;

Figure 5 is an isometric view of one of the knife sections used to make up the multi-section veneer knife;

Figure 6 is a schematicelevation showing the manner in which the veneer knife is clamped between clamping plates for'movement toward a revolving Veneer log for shaving'strips of veneer therefrom.

Referring more specifically to the drawings, the numeral Ill indicates Ythe base section of the improved veneer knifeA which base section may be formed from any suitable material and is substantially planar and is preferably of a length substantially the same as or greater than the length of the veneer log to be shaved. The leading lower surface of theA base-section II) is cut away as at I I, the cut away portion I I extending the entire length thereof, for reception of a plurality of knife sections I2. Each knife sec- "tion is formed from ahard piece of metal such asrsteel having a flat upper surface I3,a fiat base portion I4 and abevelededge I5. The upper edge of the knife section 'I2 remote from the beveled edge I5 is cutaway as at I6 to provide a mating grooveadapted to mate with the Ycut away portion II of the base section IIl for securing the knife section I2 to the base section I0.

The leading edge of the knife section I2 is cut away as at 2E! and inserted in the cut away portion 20 is a tip, cutting edge, or cutting portion 2I of extremely hard material such as tungsten carbide which cutting portion 2| is suitably secured to the knife section I2 as by brazing so that the cutting portion 2| forms an integral part of the knife section I2. The portion of the knife section I2 defined by the out away portion IB is provided with at least one but preferably two threaded bores 22 adapted to coincide with bores 23 in the base section I0 to permit a plurality of knife sections -I2to be secured to the base section IIJ as by screws 24. The bores 23 are preferably counterbored.

It should be noted that the cut away portion I6 and the cut away portion II are preferably cut at right angles so as to mate perfectly with each otherA and these cut away portions are nished to exact dimensions so that the upper surfaces I3 of the knife sections I2 will be flush with the upper surface of the base section I and each of the knife sections f 2 will be in exact alinement to present a smooth cutting edge. The sides of Ithe knife v'sections :I 21 are halso.- iinished smoothly to'p'ermit-each of the' knife sections .tol

be positioned in close engagement with the corresponding knife section and to eliminate any gaps therebetween so that the cutting vportions 2| will cut a smooth sheet of veneerf'from the veneer log. L

In order to properly positionc-.thesknife 'sections so as to have them in perfect alinement, it is frequently necessary or advisable to.. use some type of clamp, not shown, and"to`"this endf'the base. section IU may be provided with tapsgand 3I in the ends thereof `.to facilitate use of such Now,` in usingl a multise'ctio'nveneerknife of 'thetype' described, the .veneenknife -is ordinarily 4 positioned in alinement with each other to form a straight cutting edge.

In the drawings and specification, there has been set forth a preferred embodiment of the invention and although specific terms are employed, they are used in a generic and descriptive sense only and not for purposes of limitation, .the Ascope `of the .invention being defined in adapted to be associated with apparatus for VWe claim:

improved multi-section Veneer knife `x-clamping'said veneer knife and automatically lfmovingssaidveneer knife toward a revolving 15" reneer-plogfforgcutting sheets of material from said veneerJog-,rsaid knife comprising a rectan- .pgular base` section of substantially the length of said'verreerlog, said base section having a reclassociated with a conventionalnr.thertype .of

veneer` machine wherein means areprovided for l clamping' the veneerknife. and. moving .the saine automatically. toward larevolving. Yveneer .log for shaving' a layer. ofmaterial from the .veneerlog whichmaterial may then...be..us`ed. as veneer.

is shown `of clamping means,Y which maybe associated `witha machine Iof'this'. typer for holding theveneerknife in the desired positionrelativeto the veneer log,` the clamping meansbeingshow'n by wayv of illustration only, itbengruderstod that any suitable vmechai'iisinaifid.c'lain'pin'g means Y Referringl to Figure" .6,. a schematicfillustratione30 tangfnlarggroove extending along one edge thereof, a plurality of knife sections, each of said knife sectionshaving a rectangular vgroove 4extending `...along oneedge'thereof, said grooves in' the knife sec'ti'dns andthe groove. in the base section being `ofinating .configuration to permit said knife sec- ..tio,`ns.,to.t.in .close'engagementwith said base section, screw means vfor securing each of said .knife sections `in'close engagement with said base sectionand in alinement with each other, ,each of rsaid knife sections having a beveled edgeeach of fs'aid kriife sections havinga hardened' tip forming ,a vcutting edge, the cutting edgegof eachof said knife sections being in straight alinement with the.. cutting edge of the other knife sections, whereby` said knife will cut asmooth sheet ofina'- .terial from said veneerrlog,v clamping plates` cov- ',eringthe upper and lower surfacesof saidbase may be used. Clamping :plates areliiidicatedllat kshown .in Figures 1y .2 -.and. .3.. and. whengusing: 5 clamping pIateSb'fthS typthbase 'sfetiolr l0 may be provided-/withfonei-.or moreboresfBG` therein adaptedto .receive .bolts.3'I for. clamping the platesf 2. and33 .ag'ainst'th'duppen ancllower surfaces 0of `the.. compositelmultirsection .veneer knife. lI/Whe're .thefm'ulti-,section .veneeifl knife. is Yused wimelanibine :plates which.arethietogethenby mchanismother than bolts`f.,37,.tlie boresSmaybe omitted 'from the..base.section fl0.

It isthus seen'thatjther'e is .providedlenli'm- .proved .veneer Vknife comprising -,...b`ase .section having la right-angularkcut away .portionextending alongth leading Jedgetherf .and .a epluralitybf yknife sections,each .being cutawa arid being adaptedvto .be-*secured to -theicutawa por- 32..and `33 and an" illustrative .veneerilog is.' shown tionof said. base section; and V eachioffsaidgkife sections having a@ hardr-cutting 'edgeJa'nd )being t.section andjalso covering a substantial portion of 'the upperandlower surfaces of vthe knife sec- .tions and aiplui'ality of bolts passing through'gthe base section and ,the clamping plates for securing `the`clamping plates to-the upperand lower surfacesofthe basesection.

CLARENCEv GOODMAN. CLAUD T. MILLER.

1RefereimesCitedin the file of this patent UNITED STATES PATENTS 

